Here is a Bluetooth audio adapter that turns any headphones wireless. Jack allows you to connect your wired headphones to your smartphone wirelessly. Just plug in your headphones and pair the device to your phone. You can share music with others with the touch of a button.
You can sync two units to share your music to a friend’s headphones. The battery lasts up to 12 hours. Jack is compatible with most Bluetooth-enabled phones, tablets, and computers.